Inter- and intra-laboratory variability of CD4 cell counts in Swaziland

Comparison of inter- and intra-cycle variability of anti-Mullerian hormone and antral follicle counts.

BACKGROUND The antral follicle count (AFC) and anti-Müllerian hormone (AMH) both represent age-related follicular decline quite accurately, although long-term follow-up studies are still lacking. The best ovarian reserve test would need only a single, cycle-independent measurement to be representative. METHODS To compare the inter- and intra-cycle stability of AFC and AMH, we used age-adjuste...

Intra and Inter-Spore Variability in Rhizophagus irregularis AOX Gene

Arbuscular mycorrhizal fungi (AMF) are root-inhabiting fungi that form mutualistic symbioses with their host plants. AMF symbiosis improves nutrient uptake and buffers the plant against a diversity of stresses. Rhizophagus irregularis is one of the most widespread AMF species in the world, and its application in agricultural systems for yield improvement has increased over the last years. Still...

Inter- and intra-individual variability in alpha peak frequency

Converging electrophysiological evidence suggests that the alpha rhythm plays an important and active role in cognitive processing. Here, we systematically studied variability in posterior alpha peak frequency both between and within subjects. We recorded brain activity using MEG in 51 healthy human subjects under three experimental conditions - rest, passive visual stimulation and an N-back wo...

Inter- and Intra-Varietal Genetic Variability in Vitis vinifera L

Intra-sample vs. Inter-sample Variability in Architectural Paint

The aim of this project was to determine whether any intersample variations between architectural paint products of the same brand could be established. Different batches of the same product were analysed to test whether they could be distinguished. Samples analysed included batches of white paint manufactured over several months and red and blue colour samples. Samples were analysed by microsc...